/*
 * ====================================================================
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 */

package com.chouren.goandroid.http.client;

import java.util.Locale;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

import org.apache.http.HttpRequest;

/**
 * {@link org.apache.http.client.HttpRequestRetryHandler} which assumes
 * that all requested HTTP methods which should be idempotent according
 * to RFC-2616 are in fact idempotent and can be retried.
 * <p/>
 * According to RFC-2616 section 9.1.2 the idempotent HTTP methods are:
 * GET, HEAD, PUT, DELETE, OPTIONS, and TRACE
 *
 * @since 4.2
 */
public class StandardHttpRequestRetryHandler extends DefaultHttpRequestRetryHandler {

	private final Map<String, Boolean> idempotentMethods;

	/**
	 * Default constructor
	 */
	public StandardHttpRequestRetryHandler(final int retryCount, final boolean requestSentRetryEnabled) {
		super(retryCount, requestSentRetryEnabled);
		this.idempotentMethods = new ConcurrentHashMap<String, Boolean>();
		this.idempotentMethods.put("GET", Boolean.TRUE);
		this.idempotentMethods.put("HEAD", Boolean.TRUE);
		this.idempotentMethods.put("PUT", Boolean.TRUE);
		this.idempotentMethods.put("DELETE", Boolean.TRUE);
		this.idempotentMethods.put("OPTIONS", Boolean.TRUE);
		this.idempotentMethods.put("TRACE", Boolean.TRUE);
	}

	/**
	 * Default constructor
	 */
	public StandardHttpRequestRetryHandler() {
		this(3, false);
	}

	@Override
	protected boolean handleAsIdempotent(final HttpRequest request) {
		if (request == null) { return true; }
		System.out.println("request" + request);
		System.out.println("request.getRequestLine()" + request.getRequestLine());
		System.out.println(" request.getRequestLine().getMethod()" + request.getRequestLine().getMethod());
		final String method = request.getRequestLine().getMethod().toUpperCase(Locale.US);
		final Boolean b = this.idempotentMethods.get(method);
		return b != null && b.booleanValue();
	}

}
